LAS VEGAS — The annual Consumer Electronics Show ended Friday, leaving gadget lovers with visions of a “Matrix” like world in which the Internet surrounds them no matter where they go. Makers of everything from cars and refrigerators...

LAS VEGAS — Acer on Sunday unveiled the world’s thinnest laptop computer as an array of “ultrabook” rivals prepared to debut this week at the Consumer Electronics Show in Las Vegas. The Taiwan-based computer titan will begin...